Door-closer.



M. K. SNYDER.

DOOR CLOSER.

APPLICATION FILED 001*. 14. 1909.

959,175. Patented May 24, 1910.

2D! & We ass :96.

mi f UNITED STATES PATENT OFFICE.

MELL K. SNYDER, OF DETROIT, MICHIGAN, ASSIGNOR 0F ONE-HALF 'IO WILLIAMI). ROYCE, OF CLEVELAND, OHIO.

DOOR-CLOSER.

T 0 all whom it may concern:

Be it known that I, MELL K. SNYDER, a citizen of the United States, anda resident of Detroit, county of Wayne, and State of Michigan, haveinvented a new and useful Improvement in Door-Closers, of which thefollowing is a specification, the principle of the invention beingherein explained and the best mode in which I have contemplated applyingthat principle, so as to distinguish it from other inventions.

My invention relates to spring mechanisms and has particular regard to aspring actuated door closer. Closers heretofore provided for thispurpose have been more or less complicated, and have contained partswhich were subject to extraordinary strains during the operation of themechanism.

The objects of my invention are to provide a closer whose action inclosing a door will be positive, and yet one which is so designed as tohave no parts subject to such great strain as to require the provisionof those parts with great size and strength.

Another object of the invention is to provide a closer which will beextremely simple in its operation and one which may be manufactured withcomparatively little expense.

To the accomplishment of these and related ends, said invention, then,consists of the means hereinafter fully described, and particularlypointed out in the following claims.

The annexed drawing and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawing :-F igure 1 is a plan of my improved closer, asit will appear when the door is closed; Fig. 2 is a similar view showingthe parts when the door is partly opened; and Fig. 3 is a side Viewthereof.

The closer consists primarily of a metal plate B provided with screwholes whereby it may be attached to the door A. It will be understood,of course, that this plate will be attached near the upper hinged corneron the front side of the door. Two vertically spaced parallel plates orprojections E extend horizontally from plate B, which practically areriveted to the plate B. At their Specification of Letters Patent.

Application filed October 14, 1909.

Patented May 24, 1910. Serial No. 522,529.

outer ends the two projections E are provided with similar hooks e. Alever C is pivoted between the two spaced projections E at c, at the endof the plate B next the door hinge. This lever in the claims is referredto as being fulcrumed upon the plate, which phrase is intended toembrace any construction, whereby the lever is pivoted adjacent to theplate, so that it fulcrums substantially on the plate. The lever G isadapted to move in a plane parallel to that of the two spaced proections E, and in the preferred construction is straddled by the twoprojections. Adjacent to its fulcrum 0, the lever C is provided with aright-angularly disposed arm D, which extends parallel to theprojections E, and is of substantially the same length as the distancefrom the plate B to the hooks e on the spaced projections E. To theouter or free end of the lever C is pivotally attached a link a, and theend 0 of the link 0 is adapted to be connected with the top of thedoor-case. Two spiral springs F are hooked one to each of the hooks e onthe spaced projections E. At their other ends the springs F areconnected with the respective ends of a roller f which has a bearing onthe distant surface of the post D. A projection d at the top of the postD retains the roller 7 against movement therebeyond.

From this description an understanding of the operation and advantagesof my closer may be had. The springs normally retain the lever parallelto the door plate. Opening of the door swings the lever on its fulcrum,and this action is resisted by the two springs against whose tension therigid arm on the lever will move. The roller bearing, however, duringthe opening of the door will move down the bearing surface of the armtoward the lever proper, and in this way tends to produce an equilibriumin the mech anism, so that the door may be easily swung, although thetension of the springs constantly tends to return the arm and lever totheir normal position, and hence to close the door. Upon the door beingreleased, this action is reversed and the roller bearing again returnsto the outer end of the arm and the lever to its normal position,thereby closing the door.

It will, then, be seen that my complete spring actuated mechanismconsists of very and these parts are not subjected to any extraordinarystrains. parts into the complete structure which, in turn, may bequickly installed upon a door.

any undue effort, and yet its action is such as to quickly andpositively close the door i gards the mechanism herein disclosed,provided the means stated by any of the following claims or theequivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. A door closer, comprising a plate adapted to be attached toa door, a projection provided on the face of the plate, a leverfulcrumed on the plate and adapted to have its free end connected to adoor-case and provided with an angularly disposed arm adjacent itsfulcrum, a spring attached to the outer end of said projection, andmeans for movably connecting said spring to said arm.

2. A door closer, comprisin a plate adapted to be attached to a door, aever fulcrumed on the plate and normally extending parallel thereto andadapted to have its free end connected to a door-case, said lever beingprovided with an angularly disposed arm adjacent its fulcrum, two spacedprojections provided on the face of the plate intermediate of the freeend of the lever and the arm when the lever is in its normal position,said lever lying between the spaced projections, two springsrespectively attached to the outer ends of said projections, and meansmay be manufactured with comparative cheapness and may be readilyassembled The operation of the closer allows thedoor to be easily openedwithout the requirement of I for movably connecting said springs to saidarm.

3. A 'door closer, comprising a plate adapted to be attached to a door,a lever fulcrumed on the plate and normally extending parallel theretoand adapted to have its free end connected to a door-case, said leverbeing provided with an angularly disposed arm adjacent its fulcrum, twospaced projections provided on the face of the plate intermediate of thefree end of the lever and the arm when the lever is in its normalposition, said lever lying between the projections, a roller adapted tohave a bearing on one face of said arm, and two springs respectivelyattached to the outer ends of said projections and res ectivelyconnected with the ends of said rol er.

4. A door closer, comprising a plate adapted to be attached to a door, alever fulcrumed on the plate and normally extending parallel thereto,said lever being provided with an angularly disposed arm adjacent itsfulcrum, a link pivoted't'o the free end of said lever and adaptedto bepivoted to a door-case, two spaced projections provided on the face ofthe plate intermediate of the free end of the lever and the arm when thelever is in its normal position, said lever lying between theprojections, and said projections being formed at their outer ends witha hook, a roller adapted to have a bearing on one face of the arm, andtwo springs respectively connecting said hooks with the ends of saidroller.

Signed by me this 8th day of October, 1909.

MELL K. SNYDER.

Attested by- Or'ro S'roLL, MARY Sronn.

